Zebra Z-Grip Mini Ballpoint Pen - Pack of 12 - Black Ink The Z-Grip Mini is the 114mm version of Zebra's bestselling Retractable Ballpoint. Transparent barrel allows constant monitoring of ink consumption. 1.0mm nib writes a 0.7mm line. Features a rubber "Comfort Grip" and metal clip. Pack contains eight Black Mini Z-Grips.